Sunan Abi Dawud, Hadith 4965

Narrated AbuHurayrah: The Prophet said: When you hear....(Musa's version has): When a man says people have perished, he is the one who has suffered that fate most. Abu Dawud said: Malik said: If he says that out of sadness for the decadence of religion which he sees among the people, I do not think there is any harm in that. If he says that out of self-conceit and servility of the people, it is an abominable act which has been prohibited.

حَدَّثَنَا الْقَعْنَبِيُّ، عَنْ مَالِكٍ، ح وَحَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، عَنْ سُهَيْلِ بْنِ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ إِذَا سَمِعْتَ ‏"‏ ‏.‏ وَقَالَ مُوسَى ‏"‏ إِذَا قَالَ الرَّجُلُ هَلَكَ النَّاسُ فَهُوَ أَهْلَكُهُمْ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ قَالَ مَالِكٌ إِذَا قَالَ ذَلِكَ تَحَزُّنًا لِمَا يَرَى فِي النَّاسِ - يَعْنِي فِي أَمْرِ دِينِهِمْ - فَلاَ أَرَى بِهِ بَأْسًا وَإِذَا قَالَ ذَلِكَ عُجْبًا بِنَفْسِهِ وَتَصَاغُرًا لِلنَّاسِ فَهُوَ الْمَكْرُوهُ الَّذِي نُهِيَ عَنْهُ ‏.‏

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also referenced under: Hadith 4983 (DarusSalam)